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MSDS  : Azoxybenzene, 3,3',4,4'-tetrachloro-
CAS  : 21232-47-3
SYNONYMS  : * Bis(3,4-dichlorophenyl)diazene 1-oxide * Diazene, bis(3,4-dichlorophenyl)-, 1-oxide * TCAOB * 3,3',4,4'-Tetrachloroazoxybenzene * 3,4,3',4'-Tetrachloroazoxybenzene
*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER : CO4150000
CHEMICAL NAME : Azoxybenzene, 3,3',4,4'-tetrachloro-
CAS REGISTRY NUMBER : 21232-47-3
LAST UPDATED : 199712
DATA ITEMS CITED : 11
MOLECULAR FORMULA : C12-H6-Cl4-N2-O
MOLECULAR WEIGHT : 336.00
COMPOUND DESCRIPTOR : Tumorigen
Mutagen
Reproductive Effector
SYNONYMS/TRADE NAMES :
* Bis(3,4-dichlorophenyl)diazene 1-oxide
* Diazene, bis(3,4-dichlorophenyl)-, 1-oxide
* TCAOB
* 3,3',4,4'-Tetrachloroazoxybenzene
* 3,4,3',4'-Tetrachloroazoxybenzene

*** HEALTH HAZARD DATA ***

** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 80 mg/kg/17W-C
TOXIC EFFECTS :
Liver - changes in liver weight
Blood - changes in erythrocyte (RBC) count
Related to Chronic Data - changes in testicular weight
REFERENCE :
DCTODJ Drug and Chemical Toxicology. (Marcel Dekker, 270 Madison Ave., New
York, NY 10016) V.1- 1977/78- Volume(issue)/page/year: 3,47,1980

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 650 mg/kg/13W-I
TOXIC EFFECTS :
Behavioral - food intake (animal)
Nutritional and Gross Metabolic - weight loss or decreased weight gain
Related to Chronic Data - death
REFERENCE :
TOLED5 Toxicology Letters. (Elsevier Science Pub. B.V., POB 211, 1000 AE
Amsterdam, Netherlands) V.1- 1977- Volume(issue)/page/year: 25,247,1985

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 350 mg/kg/48D-I
TOXIC EFFECTS :
Liver - other changes
Endocrine - changes in thymus weight
Related to Chronic Data - changes in testicular weight
REFERENCE :
TOLED5 Toxicology Letters. (Elsevier Science Pub. B.V., POB 211, 1000 AE
Amsterdam, Netherlands) V.1- 1977- Volume(issue)/page/year: 25,247,1985

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 200 mg/kg/28D-I
TOXIC EFFECTS :
Liver - other changes
Biochemical - Enzyme inhibition, induction, or change in blood or tissue
levels - phosphatases
Biochemical - Enzyme inhibition, induction, or change in blood or tissue
levels - transaminases
REFERENCE :
TOLED5 Toxicology Letters. (Elsevier Science Pub. B.V., POB 211, 1000 AE
Amsterdam, Netherlands) V.1- 1977- Volume(issue)/page/year: 25,247,1985

** REPRODUCTIVE DATA **

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - mouse
DOSE : 75600 ug/kg
SEX/DURATION : female 14 day(s) pre-mating - 28 day(s) post-birth
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - blood and lymphatic
systems (including spleen and marrow)
Reproductive - Effects on Newborn - live birth index (measured after birth)
REFERENCE :
AECTCV Archives of Environmental Contamination and Toxicology.
(Springer-Verlag New York, Inc., Service Center, 44 Hartz Way, Secaucus, NJ
070944) V.1- 1973- Volume(issue)/page/year: 14,677,1985

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - mouse
DOSE : 7560 ug/kg
SEX/DURATION : female 14 day(s) pre-mating - 28 day(s) post-birth
TOXIC EFFECTS :
Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight
gain)
REFERENCE :
AECTCV Archives of Environmental Contamination and Toxicology.
(Springer-Verlag New York, Inc., Service Center, 44 Hartz Way, Secaucus, NJ
070944) V.1- 1973- Volume(issue)/page/year: 14,677,1985

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - mouse
DOSE : 16 mg/kg
SEX/DURATION : female 12 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - post-implantation mortality (e.g. dead and/or
resorbed implants per total number of implants)
Reproductive - Effects on Embryo or Fetus - fetal death
REFERENCE :
ARTODN Archives of Toxicology. (Springer-Verlag, Heidelberger Pl. 3, D-1000
Berlin 33, Fed. Rep. Ger.) V.32- 1974- Volume(issue)/page/year:
55,20,1984

TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - mouse
DOSE : 6 mg/kg
SEX/DURATION : female 11 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - craniofacial
(including nose and tongue)
Reproductive - Specific Developmental Abnormalities - urogenital system
REFERENCE :
ARTODN Archives of Toxicology. (Springer-Verlag, Heidelberger Pl. 3, D-1000
Berlin 33, Fed. Rep. Ger.) V.32- 1974- Volume(issue)/page/year:
55,20,1984

** MUTATION DATA **

TYPE OF TEST : Cytogenetic analysis
ROUTE OF EXPOSURE : Oral
TEST SYSTEM : Rodent - mouse
DOSE/DURATION : 134 mg/kg/4W (Continuous)
REFERENCE :
AECTCV Archives of Environmental Contamination and Toxicology.
(Springer-Verlag New York, Inc., Service Center, 44 Hartz Way, Secaucus, NJ
070944) V.1- 1973- Volume(issue)/page/year: 14,677,1985

*** STATUS IN U.S. ***

EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998

NTP Carcinogenesis studies; test completed (peer review), October 1997


*** END OF RECORD ***
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1-Azoniaspiro(4.5)decane,1-(3-(dimethylcarbamoyl)-3,3-diphenylpropyl)-1-methyl-, bromide 70433-02-2
2-Azoniaspiro(4.5)decane, 2-dodecyl-2-methyl-, iodide 798-02-7
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5-Azoniaspiro(4.4)nonane,2-((hydroxydiphenylacetyl)oxy)-, bromide 76302-54-0
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